The audible influence of different rotation speeds during continuous HRTF measurements

* Presenting author
Day / Time: 20.03.2018, 14:40-15:00
Room: Interim 1
Typ: Vortrag (strukturierte Sitzung)
Abstract: One factor for the quality of binaural synthesis is the head-related transfer function (HRTF). Several studies showed that individual HRTFs will lead to overall better performance than generic HRTFs from artificial heads. To make individual measurements feasible, fast measurement techniques have been developed which are often some kind of loudspeaker array.The time reduction is typically achieved by parallelization of measurement signals.One such fast system was developed at the Institute of Technical Acoustics, RWTH Aachen University and is used in this paper.When measuring HRTFs, the subject is usually rotated by some angle, stops and waits for the measurement signal to complete before moving to the next measurement angle. It was shown that with this approach comparable results to a traditional measurement could be achieved.Continuous rotation of subjects during measurements can be used to reduce overall measurement time even more. It has been shown that the measurement error caused by the continuous rotation is anti proportional to the speed with which the subject is rotated.The audibility of these additional measurement errors is studied in this paper. To this end, several different measurements, obtained with different speeds are compared in a ABX listening experiment to a reference measurement.